Problem A
2048 — Problem Statistics

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Submissions	19378
Accepted submissions	7797
Submission ratio	40.24%
Authors	7870
Accepted authors	6453
Author ratio	81.99%

#	User	Runtime	Language	Date
1	Wenhao Xu	0.01 s	APL	2023-03-18 10:41:30

#	User	Runtime	Language	Date
1	Chenzhang Hu	0.03 s	Bash	2024-02-03 07:42:34

#	User	Runtime	Language	Date
1	Nazrul Affiq Bin Ahmad Amimar	0.02 s	C#	2015-09-12 11:06:52
2	Daouda Camara	0.02 s	C#	2015-09-14 12:08:24
3	Tor Skude	0.02 s	C#	2015-09-18 22:44:45
4	Bryan Shiffman	0.02 s	C#	2015-09-25 19:06:40
5	Udgin Pyl	0.02 s	C#	2015-09-30 19:02:03
6	Andriy Zyevakov	0.02 s	C#	2015-09-30 19:34:47
7	Piotr Karpala	0.02 s	C#	2015-09-30 19:53:04
8	Wojciech Borowiecki	0.02 s	C#	2015-10-03 03:19:29
9	Johan Bjärneryd	0.02 s	C#	2015-10-07 19:26:59
10	Khin Nyunt	0.02 s	C#	2016-01-31 15:15:16

#	User	Runtime	Language	Date
1	Dane Johnson	0.01 s	Common Lisp	2021-04-02 20:16:13
2	KatSch	0.01 s	Common Lisp	2022-10-26 13:22:26
3	William Lilliesköld	0.01 s	Common Lisp	2023-04-28 22:49:04
4	David Cawthon	0.02 s	Common Lisp	2019-04-12 20:01:11
5	Kevin Retzke	0.02 s	Common Lisp	2019-06-05 05:48:38
6	Hidden user	0.03 s	Common Lisp	2025-02-06 20:10:41

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.03 s	F#	2023-04-01 09:32:41
2	Simon Echers	0.04 s	F#	2022-01-15 03:19:52
3	Thanh Dinh Ta	0.04 s	F#	2022-07-12 16:19:16

#	User	Runtime	Language	Date
1	Khin Nyunt	0.00 s	Go	2023-09-10 16:42:58
2	Thomas	0.00 s	Go	2024-01-10 02:51:49
3	Allan Santos	0.00 s	Go	2024-03-03 22:17:51
4	Hidden user	0.00 s	Go	2024-05-26 14:14:43
5	Yamone Oo	0.00 s	Go	2024-09-18 17:47:34
6	Hidden user	0.00 s	Go	2024-10-02 18:11:21
7	Ronas Jacob Coban Olsen	0.00 s	Go	2024-10-20 21:36:32
8	Sergey Nikulin	0.02 s	Go	2020-04-15 18:26:59
9	Kent Gustavsson	0.02 s	Go	2020-06-05 15:41:13
10	Haw Jia Lim	0.02 s	Go	2022-08-16 16:13:07

#	User	Runtime	Language	Date
1	Guangyi Zhou	0.04 s	Java	2024-11-17 10:49:04
2	Joshua Chin	0.04 s	Java	2025-04-01 21:08:42
3	Lukas Olof Ingemarsson	0.04 s	Java	2025-05-28 15:30:47
4	Tony Chen	0.04 s	Java	2025-06-24 04:07:01
5	Nguyễn Mạnh Phúc	0.05 s	Java	2015-09-12 07:33:01
6	Tú Huỳnh	0.05 s	Java	2015-09-12 07:48:44
7	Marco Vincenzo Karaan	0.05 s	Java	2015-09-12 08:21:51
8	Kim Howel delos Reyes	0.05 s	Java	2015-09-12 08:23:07
9	Miguel I. Palma	0.05 s	Java	2015-09-12 08:26:09
10	Antonius Satrio Triatmoko	0.05 s	Java	2015-09-12 08:48:10

#	User	Runtime	Language	Date
1	jack	0.04 s	JavaScript (Node.js)	2024-12-27 17:22:44
2	Jordan Manley	0.05 s	JavaScript (Node.js)	2018-07-04 20:41:31
3	Carl Sundvall	0.05 s	JavaScript (Node.js)	2018-10-25 14:16:08
4	Mathias Magnusson	0.05 s	JavaScript (Node.js)	2018-11-22 14:25:08
5	Tomáš Necky Necuda	0.05 s	JavaScript (Node.js)	2019-02-05 19:29:39
6	Anthony Czarnecki	0.05 s	JavaScript (Node.js)	2024-04-03 21:02:30
7	Hebert Albertin	0.05 s	JavaScript (Node.js)	2024-05-21 23:46:44
8	Hidden user	0.05 s	JavaScript (Node.js)	2024-10-19 19:18:11
9	Linnea Olsson	0.05 s	JavaScript (Node.js)	2025-02-28 20:27:50
10	Emil Lindblom	0.08 s	JavaScript (Node.js)	2022-08-10 10:40:45

#	User	Runtime	Language	Date
1	Peter Kedemo	0.01 s	JavaScript (SpiderMonkey)	2016-01-08 19:41:46
2	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2016-02-14 20:45:25
3	Tor Nordqvist	0.01 s	JavaScript (SpiderMonkey)	2016-10-25 10:49:56
4	J M	0.01 s	JavaScript (SpiderMonkey)	2016-10-27 15:27:07
5	Knut Salomonsson	0.01 s	JavaScript (SpiderMonkey)	2016-11-01 10:19:11
6	Hidden user	0.01 s	JavaScript (SpiderMonkey)	2016-11-22 22:11:16
7	Brandon Ibbotson	0.01 s	JavaScript (SpiderMonkey)	2017-01-10 22:02:15
8	Hai Yang Xu	0.01 s	JavaScript (SpiderMonkey)	2017-09-23 19:34:27
9	Graham Fairweather	0.01 s	JavaScript (SpiderMonkey)	2017-10-09 00:10:44
10	Khugan Shanmugeswaran	0.01 s	JavaScript (SpiderMonkey)	2017-11-09 18:25:02

#	User	Runtime	Language	Date
1	Timothy Gaede	0.86 s	Julia	2024-05-22 13:31:14

#	User	Runtime	Language	Date
1	Nicholas Johnson	0.14 s	Kotlin	2020-06-14 21:58:06
2	Jacob Huebner	0.14 s	Kotlin	2022-12-10 09:34:50
3	Johnny Baloney	0.15 s	Kotlin	2022-01-01 21:32:10
4	Emil Eriksmoen Stensland	0.17 s	Kotlin	2021-02-09 23:22:10
5	Filip Belik	0.18 s	Kotlin	2019-10-25 00:42:20
6	Hidden user	0.18 s	Kotlin	2022-08-25 22:08:45
7	André Dyrstad	0.19 s	Kotlin	2020-08-07 08:45:10
8	rexoy87980	0.19 s	Kotlin	2020-10-23 17:16:28
9	Amaan Marfatia	0.19 s	Kotlin	2022-02-12 05:17:03
10	Hidden user	0.19 s	Kotlin	2022-05-17 18:30:11

#	User	Runtime	Language	Date
1	Matthew Farshad	0.00 s	Lua	2025-02-10 21:04:30

#	User	Runtime	Language	Date
1	Alfred Morgan	0.00 s	Nim	2024-09-28 10:09:12

#	User	Runtime	Language	Date
1	Richard Neswold	0.00 s	OCaml	2019-06-10 18:21:57
2	Hidden user	0.00 s	OCaml	2019-10-04 20:16:50
3	Hidden user	0.00 s	OCaml	2024-01-12 21:35:35

#	User	Runtime	Language	Date
1	Jeff Cashion	0.01 s	PHP	2018-04-20 15:28:14
2	Susanne Ragnemalm	0.01 s	PHP	2018-05-23 21:29:19
3	Alessandro Pasqualini	0.01 s	PHP	2019-01-14 17:14:08
4	n4cer25	0.01 s	PHP	2021-01-15 20:40:55
5	Bo Stanley	0.01 s	PHP	2021-09-30 17:27:01
6	Hidden user	0.01 s	PHP	2022-02-17 21:32:03
7	ayman momo	0.01 s	PHP	2024-09-25 15:52:55
8	João Vasconcelos	0.01 s	PHP	2025-03-05 12:11:48

#	User	Runtime	Language	Date
1	Erik Odenman	0.02 s	Python 2	2015-09-12 16:23:58
2	Adrian Budau	0.02 s	Python 2	2015-11-02 23:22:53
3	Stanislav Pintjuk	0.02 s	Python 2	2015-11-12 23:43:30
4	Siri Dovner	0.02 s	Python 2	2016-10-15 11:59:47
5	Mayank Makwana	0.02 s	Python 2	2017-09-22 19:04:52
6	Joachim Kønigslieb	0.02 s	Python 2	2017-10-29 15:22:20
7	Ethan Arnold	0.02 s	Python 2	2017-11-08 19:33:40
8	Marvin Chin	0.02 s	Python 2	2017-11-27 12:09:29
9	Henrik Henriksson	0.02 s	Python 2	2017-11-30 22:36:24
10	Måns Gezelius	0.02 s	Python 2	2018-01-18 15:25:15

#	User	Runtime	Language	Date
1	Riwu Wang	0.02 s	Python 3	2015-09-12 07:25:07
2	田中恭太	0.02 s	Python 3	2015-09-23 09:32:46
3	Zhuowei Zhang	0.02 s	Python 3	2015-09-26 20:25:18
4	Adrien Coulier	0.02 s	Python 3	2015-09-26 21:04:57
5	Alexander Simko	0.02 s	Python 3	2015-10-02 12:10:47
6	Marcus Dicander	0.02 s	Python 3	2015-10-03 19:35:05
7	Christoffer Øhrstrøm	0.02 s	Python 3	2015-10-06 18:56:20
8	Scott Linder	0.02 s	Python 3	2015-10-10 21:48:41
9	Johan Ejstrud	0.02 s	Python 3	2015-10-18 16:41:24
10	Frederik Højholt	0.02 s	Python 3	2015-10-22 20:37:18

#	User	Runtime	Language	Date
1	Jan Itor	0.03 s	Ruby	2016-01-24 21:19:15
2	Naoki Mizuno	0.03 s	Ruby	2016-03-26 10:46:59
3	Erik Rydbert	0.03 s	Ruby	2016-07-07 09:53:01
4	Lee Tze Han	0.04 s	Ruby	2018-06-17 10:53:11
5	Mark Donald Amobi	0.04 s	Ruby	2019-02-10 17:05:55
6	Hidden user	0.04 s	Ruby	2019-10-04 17:31:30
7	Macdara mac an tSionnaigh	0.04 s	Ruby	2019-10-08 00:11:24
8	Pandhu Hutomo Aditya	0.05 s	Ruby	2020-11-03 00:08:22
9	Karthick	0.05 s	Ruby	2021-01-20 06:16:24
10	Hidden user	0.05 s	Ruby	2021-03-11 11:30:04

#	User	Runtime	Language	Date
1	Joel Martelleur	0.05 s	TypeScript	2024-04-25 18:11:01
2	Takudzwa Shamhu	0.09 s	TypeScript	2023-06-05 23:57:13

#	User	Runtime	Language	Date
1	Joe Blower	0.00 s	Zig	2025-05-24 03:15:59

#	User	Length	Language	Date
1	Wenhao Xu	418	APL	2023-03-18 10:52:57

#	User	Length	Language	Date
1	Chenzhang Hu	5	Bash	2024-02-03 16:06:12

#	User	Length	Language	Date
1	cera	356	C	2024-09-10 04:54:13
2	klimisnotmilk	1039	C	2023-03-14 06:48:52
3	Tjandra Satria Gunawan	1165	C	2015-09-12 09:40:51
4	sicupu	1310	C	2020-10-18 15:39:31
5	Axel Svensson	1323	C	2022-06-14 15:11:44
6	Erasmus Cedernaes	1376	C	2015-12-14 21:09:28
7	Teju Venkatesh	1424	C	2025-05-21 15:56:37
8	Mark Glose	1473	C	2016-03-05 21:57:45
9	Mikael Magnusson	1575	C	2017-01-19 16:00:49
10	Hidden user	1634	C	2016-06-29 21:17:58

#	User	Length	Language	Date
1	Alexander Hellstén	541	C#	2023-04-10 10:13:59
2	Ruben Rystedt	1565	C#	2024-11-11 22:07:12
3	Anthony Ye	1806	C#	2025-04-04 19:36:26
4	Esty Crow	1821	C#	2025-03-21 14:19:22
5	Si Thu Hein	1971	C#	2021-12-26 06:11:40
6	Bjarke Brodin	1981	C#	2020-10-11 00:29:55
7	Göran Andersson	2276	C#	2022-06-08 01:58:11
8	Lurdez Fernandez	2312	C#	2025-05-22 16:28:32
9	Thomas Norris	2342	C#	2019-06-21 07:37:23
10	Mustapha Hamze	2389	C#	2022-12-12 09:12:23

#	User	Length	Language	Date
1	Frederik Vase	313	C++	2025-02-26 21:33:09
2	Sebastian Falk	316	C++	2024-05-03 09:05:28
3	Rumbin Lee	477	C++	2023-07-17 08:57:01
4	Herman Karlsson	671	C++	2015-10-09 16:12:57
5	Hidden user	789	C++	2024-02-20 14:00:02
6	Izzati Al Vandiar	820	C++	2016-03-21 01:14:26
7	Evan Michael Bailey	833	C++	2023-03-09 00:16:57
8	Johan Wind	872	C++	2015-09-14 16:40:36
9	Le Hoang Khang	894	C++	2023-10-25 13:27:51
10	Lim An Jun	902	C++	2023-02-11 11:37:31

#	User	Length	Language	Date
1	David Cawthon	1521	Common Lisp	2019-04-12 20:01:11
2	Dane Johnson	1906	Common Lisp	2021-04-02 20:16:13
3	Hidden user	1953	Common Lisp	2025-02-06 20:10:41
4	Kevin Retzke	2254	Common Lisp	2019-06-05 05:48:38
5	KatSch	3483	Common Lisp	2022-10-26 13:22:26
6	William Lilliesköld	3524	Common Lisp	2023-04-28 22:49:04

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	1986	F#	2023-04-01 09:32:41
2	Simon Echers	2340	F#	2022-01-15 03:19:52
3	Thanh Dinh Ta	2446	F#	2022-07-12 16:19:16

#	User	Length	Language	Date
1	Dag Wullt	1158	Go	2021-08-01 19:52:30
2	Krzysztof Gibuła	1208	Go	2021-03-26 23:03:52
3	Ronas Jacob Coban Olsen	1649	Go	2024-10-20 21:36:32
4	Ainun Nazieb	1650	Go	2020-09-24 18:05:31
5	Abdurrachman Habibi	1684	Go	2020-11-14 17:34:47
6	Hidden user	1783	Go	2024-05-26 14:14:43
7	Fabrice Vaillant	1809	Go	2016-09-19 14:34:58
8	Will Dickinson	1812	Go	2021-03-16 10:41:47
9	Christoffer Danborg Irvall	1870	Go	2019-04-12 14:53:28
10	Charles Eli Gaitley	1884	Go	2019-08-25 06:48:46

#	User	Length	Language	Date
1	Trong Duc Truong	529	Haskell	2022-10-02 00:27:38
2	Birk Tjelmeland	533	Haskell	2017-11-12 17:52:05
3	Gustaf Pihl	689	Haskell	2024-04-13 22:27:17
4	Aaron Allen	831	Haskell	2021-06-14 05:28:11
5	Antony Lee	833	Haskell	2018-10-18 18:40:31
6	Shinji Koshida	852	Haskell	2025-01-20 21:13:50
7	Suus Brommer	854	Haskell	2023-12-29 22:49:21
8	Aurélien Pepin	859	Haskell	2019-09-22 10:51:36
9	Andrew Doherty	871	Haskell	2024-11-19 18:47:38
10	Jan Hrček	889	Haskell	2021-04-19 15:18:04

#	User	Length	Language	Date
1	Duncan Page	1120	Java	2018-10-28 00:12:39
2	school	1126	Java	2023-11-17 19:41:20
3	Tshewang Dema	1151	Java	2021-12-20 11:55:03
4	Dana Paz	1154	Java	2025-01-26 21:34:35
5	John Steel	1155	Java	2025-03-20 18:52:33
6	Meet	1155	Java	2022-08-31 22:16:24
7	Nick Burger	1155	Java	2022-10-24 19:53:18
8	Mary Bauman	1158	Java	2022-04-19 19:15:21
9	Gazi Md Rakibul Hasan	1158	Java	2022-06-27 12:35:49
10	Saketh Ganji	1159	Java	2022-08-30 18:36:13

#	User	Length	Language	Date
1	Sumit Neema	1648	JavaScript (Node.js)	2020-07-25 18:27:41
2	Marc Fong	1988	JavaScript (Node.js)	2021-05-21 15:58:17
3	Brandon Alejandro Mosqueda González	2115	JavaScript (Node.js)	2023-03-07 14:16:51
4	Emil Lindblom	2142	JavaScript (Node.js)	2022-08-10 10:41:37
5	Oh Tien Cheng	2441	JavaScript (Node.js)	2020-05-24 10:35:57
6	Anthony Czarnecki	2487	JavaScript (Node.js)	2024-04-03 21:02:30
7	Khin Nyunt	2516	JavaScript (Node.js)	2021-08-15 06:10:33
8	Jordan Manley	2591	JavaScript (Node.js)	2018-07-04 20:41:31
9	Carl Sundvall	2739	JavaScript (Node.js)	2018-10-25 14:16:08
10	Mathias Magnusson	2787	JavaScript (Node.js)	2018-11-22 14:25:08

#	User	Length	Language	Date
1	Kārlis Gaņģis	1120	JavaScript (SpiderMonkey)	2019-08-23 13:32:01
2	Djilani Kebaili	1201	JavaScript (SpiderMonkey)	2018-09-23 01:36:39
3	Tor Nordqvist	1204	JavaScript (SpiderMonkey)	2016-10-25 10:49:56
4	Peter Kedemo	1392	JavaScript (SpiderMonkey)	2016-01-08 19:41:46
5	Knut Salomonsson	1392	JavaScript (SpiderMonkey)	2016-11-01 10:19:11
6	Bjørn Chr. Soltvedt	1465	JavaScript (SpiderMonkey)	2016-02-14 20:45:25
7	Christian Cederquist	1485	JavaScript (SpiderMonkey)	2023-03-03 07:02:06
8	Danpaol	1741	JavaScript (SpiderMonkey)	2018-05-23 14:51:30
9	SURYA	1887	JavaScript (SpiderMonkey)	2024-09-20 04:31:14
10	Khugan Shanmugeswaran	1911	JavaScript (SpiderMonkey)	2017-11-09 18:25:02

#	User	Length	Language	Date
1	Timothy Gaede	4147	Julia	2024-05-22 13:31:14

#	User	Length	Language	Date
1	Dayan Ruben Gonzalez	1324	Kotlin	2020-10-05 22:37:07
2	Amaan Marfatia	1399	Kotlin	2022-02-12 05:17:03
3	ANDREY FELIPE PINTO URIBE	1948	Kotlin	2024-05-18 06:32:37
4	Johnny Baloney	1981	Kotlin	2022-01-01 21:32:10
5	Jonathan Soo	2150	Kotlin	2019-07-20 17:00:41
6	Dmitry Shostak	2194	Kotlin	2018-08-19 19:25:18
7	Adam Koprowski	2217	Kotlin	2020-08-19 11:21:08
8	Hidden user	2221	Kotlin	2022-05-17 18:30:11
9	Jacob Huebner	2352	Kotlin	2022-12-10 09:34:50
10	Adam Rankin	2565	Kotlin	2023-09-24 19:32:35

#	User	Length	Language	Date
1	Matthew Farshad	3969	Lua	2025-02-10 21:04:30

#	User	Length	Language	Date
1	Alfred Morgan	5112	Nim	2024-09-28 10:09:12

#	User	Length	Language	Date
1	Hidden user	1569	OCaml	2024-01-12 23:08:20
2	Hidden user	1834	OCaml	2019-10-04 20:16:50
3	Richard Neswold	3297	OCaml	2019-06-10 18:21:57

#	User	Length	Language	Date
1	João Vasconcelos	1418	PHP	2025-03-05 12:11:48
2	Bo Stanley	2901	PHP	2021-09-30 17:27:01
3	Susanne Ragnemalm	3185	PHP	2018-05-23 21:29:19
4	Jeff Cashion	3374	PHP	2018-04-20 15:28:14
5	ayman momo	4019	PHP	2024-09-25 15:52:55
6	Hidden user	5500	PHP	2022-02-17 21:32:03
7	Alessandro Pasqualini	5928	PHP	2019-01-14 17:14:08
8	n4cer25	6118	PHP	2021-01-15 20:40:55

#	User	Length	Language	Date
1	Thomas Feld	366	Python 2	2019-08-16 14:06:05
2	Asger Hautop Drewsen	683	Python 2	2018-11-15 13:02:41
3	Erik Odenman	732	Python 2	2015-09-12 16:23:58
4	Adrian Budau	748	Python 2	2015-11-02 23:22:53
5	Andreas Eisele	780	Python 2	2018-09-09 20:27:12
6	Sangay Tshering	803	Python 2	2021-04-14 11:41:43
7	Darryl Day	814	Python 2	2018-09-15 16:19:32
8	KAVYA R eee	838	Python 2	2020-09-09 08:48:52
9	Masturbating Leprechaun	841	Python 2	2018-10-24 22:57:11
10	Cian Ruane	849	Python 2	2018-05-03 16:54:29

#	User	Length	Language	Date
1	Elias Lundell	207	Python 3	2025-07-08 14:49:45
2	Kaaden RumanCam	217	Python 3	2023-03-16 02:44:55
3	Shashank Bhatt	236	Python 3	2023-03-16 00:03:13
4	Tobias Glimmerfors	256	Python 3	2025-07-07 23:52:19
5	Lawry Sorenson	287	Python 3	2025-05-29 22:45:20
6	Klara Bragesjö Björkén	322	Python 3	2025-07-07 23:46:43
7	Wernher To	362	Python 3	2023-02-10 15:55:34
8	David Llorens	393	Python 3	2023-07-30 02:27:27
9	Lukas Kerren	403	Python 3	2024-05-02 02:59:07
10	Kelly Dance	410	Python 3	2023-03-15 18:12:27

#	User	Length	Language	Date
1	Thomas Feld	205	Ruby	2023-05-04 14:22:10
2	Hidden user	584	Ruby	2019-10-04 17:31:30
3	Brooks Peterson	898	Ruby	2025-05-09 01:35:23
4	Naoki Mizuno	1191	Ruby	2016-03-26 10:46:59
5	Lee Tze Han	1318	Ruby	2018-06-17 10:53:11
6	Andreas Severin Hauch Trøstrup	1376	Ruby	2022-08-27 13:29:55
7	Hidden user	1686	Ruby	2021-03-11 11:30:04
8	Jan Itor	1750	Ruby	2016-01-24 21:19:15
9	Mark Donald Amobi	1951	Ruby	2019-02-10 17:05:55
10	Macdara mac an tSionnaigh	3168	Ruby	2019-10-08 00:11:24

#	User	Length	Language	Date
1	Vincent Lagerros	921	Rust	2024-05-31 02:13:49
2	Hidden user	1516	Rust	2025-03-08 02:14:11
3	Zachary DeStefano	1577	Rust	2024-07-09 18:34:53
4	Mathias Svensson	1669	Rust	2019-10-24 00:11:51
5	Jyotirmay Shelly	1794	Rust	2023-02-12 02:05:58
6	Tobias Jeppesen	1830	Rust	2022-11-16 12:16:27
7	gard heine kalland	1939	Rust	2024-03-26 22:50:32
8	jskop	2003	Rust	2022-07-19 11:14:30
9	Caleb Early	2262	Rust	2024-10-04 03:49:58
10	Morten Raeburn	2265	Rust	2021-11-18 19:39:13

#	User	Length	Language	Date
1	Takudzwa Shamhu	2593	TypeScript	2023-06-05 23:57:13
2	Joel Martelleur	5431	TypeScript	2024-04-25 18:11:01

#	User	Length	Language	Date
1	Joe Blower	1825	Zig	2025-05-24 03:15:59

Solution running time distribution